Hi! It's been a while but I still keep on rereading this story.
I hope you'll make a sequel for this. You know life after they got back together and what happened to Yuuya and Mami, Tatsuki and Ran. Though I your main focus is the AyaxRei pairing, but it would be great to have them in a reunion. A wedding perhaps? This time it would be Aya and Rei's moment. hihi...

I thought that rei was OOC, but. I remembered you said it was years after ;3 people change. I DO love the ice prince interrogation scene. You might want to re-read your story for any repetitions like this sentence:

And when everything seemed okay and back to normal, and Aya would have let the incident go, had she not met Rei’s eyes that told her the conversation was far from over, and she lost her appetite entirely.

I was honestly confused and wasn't sure what the sentence was saying but figured it out anyways. Try not to use so many ands ;3

Also. The "are you breaking up with me?" made me laugh out loud. Literally.

I was so torn between Yuuya and Rei and I almost wanted Aya to end up with Yuuya. When Rei asked her if Yuuya loved her more than he ever would, I cried. Really, great. Hit me bad. ): Great job. It was a nice read. So bad about Yuuya, because I think in this fic, they are also perfect for each other but surely, nothing really is perfect. GREAT. (: